z-index Layer in netscape with SWF

I have a html page with a div call maindiv containing a swf file of 800*600 size. I have a content layer div which contains text and image whose z-index is higher than the maindiv. the problem is in netscape the content layer div is not shown even when its z-index is higher than the maindiv and in IE untill i make the wmode transparent the content layer div is not shown. Can anybody help me and get me out of this loope between IE and Netscape

And one last Q is Can i make a swf transparent in netscape if yes how?